diff --git a/test/features/known_failures_Linux.json b/test/features/known_failures_Linux.json
index 9bf600d..fd96250 100644
--- a/test/features/known_failures_Linux.json
+++ b/test/features/known_failures_Linux.json
@@ -1,6 +1,8 @@
 [
   "c_glib-limit_container_length_binary_buffered-ip",
   "c_glib-limit_string_length_binary_buffered-ip",
+  "cpp-theader_framed_binary_header_buffered-ip",
+  "cpp-theader_unframed_binary_header_buffered-ip",
   "csharp-limit_container_length_binary_buffered-ip",
   "csharp-limit_container_length_compact_buffered-ip",
   "csharp-limit_string_length_binary_buffered-ip",